Open AccessPeptide Utilization by Group N Streptococci
Author(s) -
B. A. Law
Publication year - 1978
Publication title -
journal of general microbiology/journal of general microbiology
Language(s) - Uncategorized
Resource type - Journals
eISSN - 2059-9323
pISSN - 0022-1287
DOI - 10.1099/00221287-105-1-113
Subject(s) - tripeptide , dipeptide , peptide , bacteria , streptococcus , biochemistry , oligopeptide , amino acid , chemistry , streptococcaceae , strain (injury) , microbiology and biotechnology , biology , antibiotics , genetics , anatomy
The rate of glycylleucine uptake by Group N streptococci varied widely. One strain of Streptococcus cremoris did not transport the dipeptide or utilize tripeptides. In peptide-utilizing strains, amino acid, dipeptide and tripeptide transport were distinct, although dipeptides inhibited tripeptide utilization. Specificity determinants for peptide transport and utilization were similar to those reported in Gram-negative bacteria. Peptide utilization in S. lactis was not completely dependent on the transport of intact peptides.